array(3) { ["data"] => array(20) { [0] => array(11) { ["tagname"] => string(18) "电力安装资质" ["inlink"] => int(0) ["addtime"] => string(10) "1593421791" ["tagid"] => int(55358) ["id"] => string(5) "55358" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503910368444442) ["pageurl"] => string(34) "//www.sheji456.com/ask/tlist/55358" ["m_pageurl"] => string(32) "//m.sheji456.com/ask/tlist/55358" } [1] => array(11) { ["tagname"] => string(18) "地暖安装资质" ["inlink"] => int(0) ["addtime"] => string(10) "1593574776" ["tagid"] => int(204230) ["id"] => string(6) "204230" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503916032851970) ["pageurl"] => string(35) "//www.sheji456.com/ask/tlist/204230" ["m_pageurl"] => string(33) "//m.sheji456.com/ask/tlist/204230" } [2] => array(11) { ["tagname"] => string(24) "电梯安装资质办理" ["inlink"] => int(0) ["addtime"] => string(10) "1593574362" ["tagid"] => int(97373) ["id"] => string(5) "97373" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503912665874439) ["pageurl"] => string(34) "//www.sheji456.com/ask/tlist/97373" ["m_pageurl"] => string(32) "//m.sheji456.com/ask/tlist/97373" } [3] => array(11) { ["tagname"] => string(18) "水电安装资质" ["inlink"] => int(0) ["addtime"] => string(10) "1593574946" ["tagid"] => int(235847) ["id"] => string(6) "235847" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503918297776140) ["pageurl"] => string(35) "//www.sheji456.com/ask/tlist/235847" ["m_pageurl"] => string(33) "//m.sheji456.com/ask/tlist/235847" } [4] => array(11) { ["tagname"] => string(30) "求解室内水电如何安装" ["inlink"] => int(0) ["addtime"] => string(10) "1599534201" ["tagid"] => int(1248735) ["id"] => string(7) "1248735" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503952684777504) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/1248735" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/1248735" } [5] => array(11) { ["tagname"] => string(33) "求解小熊加湿器怎么安装" ["inlink"] => int(0) ["addtime"] => string(10) "1599534257" ["tagid"] => int(1258920) ["id"] => string(7) "1258920" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503953055973403) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/1258920" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/1258920" } [6] => array(11) { ["tagname"] => string(21) "天然气安装资质" ["inlink"] => int(0) ["addtime"] => string(10) "1593421791" ["tagid"] => int(56480) ["id"] => string(5) "56480" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503910407241743) ["pageurl"] => string(34) "//www.sheji456.com/ask/tlist/56480" ["m_pageurl"] => string(32) "//m.sheji456.com/ask/tlist/56480" } [7] => array(11) { ["tagname"] => string(18) "门窗安装资质" ["inlink"] => int(0) ["addtime"] => string(10) "1598922953" ["tagid"] => int(816496) ["id"] => string(6) "816496" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503937903001629) ["pageurl"] => string(35) "//www.sheji456.com/ask/tlist/816496" ["m_pageurl"] => string(33) "//m.sheji456.com/ask/tlist/816496" } [8] => array(11) { ["tagname"] => string(18) "西安装饰资质" ["inlink"] => int(0) ["addtime"] => string(10) "1607334984" ["tagid"] => int(6615513) ["id"] => string(7) "6615513" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703504134967132194) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/6615513" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/6615513" } [9] => array(11) { ["tagname"] => string(18) "西安装修资质" ["inlink"] => int(0) ["addtime"] => string(10) "1607334984" ["tagid"] => int(6615765) ["id"] => string(7) "6615765" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703504134974472227) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/6615765" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/6615765" } [10] => array(11) { ["tagname"] => string(45) "求解创维电视挂壁安装方法要什么" ["inlink"] => int(0) ["addtime"] => string(10) "1599534201" ["tagid"] => int(1232393) ["id"] => string(7) "1232393" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503952133226502) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/1232393" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/1232393" } [11] => array(11) { ["tagname"] => string(33) "求解安装空调要多大空间" ["inlink"] => int(0) ["addtime"] => string(10) "1599534201" ["tagid"] => int(1242739) ["id"] => string(7) "1242739" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503952484499481) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/1242739" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/1242739" } [12] => array(11) { ["tagname"] => string(33) "求解排气扇什么时候安装" ["inlink"] => int(0) ["addtime"] => string(10) "1599534257" ["tagid"] => int(1257341) ["id"] => string(7) "1257341" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503952964747272) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/1257341" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/1257341" } [13] => array(11) { ["tagname"] => string(30) "求解蔻丝衣柜如何安装" ["inlink"] => int(0) ["addtime"] => string(10) "1599534257" ["tagid"] => int(1267888) ["id"] => string(7) "1267888" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503953354817540) ["pageurl"] => string(36) "//www.sheji456.com/ask/tlist/1267888" ["m_pageurl"] => string(34) "//m.sheji456.com/ask/tlist/1267888" } [14] => array(11) { ["tagname"] => string(27) 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=> string(33) "//m.sheji456.com/ask/tlist/246822" } [19] => array(11) { ["tagname"] => string(24) "管道安装资质办理" ["inlink"] => int(0) ["addtime"] => string(10) "1593575176" ["tagid"] => int(276930) ["id"] => string(6) "276930" ["depart"] => string(1) "0" ["updatetime"] => int(0) ["status"] => int(99) ["_version_"] => int(1703503919657779218) ["pageurl"] => string(35) "//www.sheji456.com/ask/tlist/276930" ["m_pageurl"] => string(33) "//m.sheji456.com/ask/tlist/276930" } } ["counts"] => int(53450) ["pagecount"] => float(2673) }

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求解电视台发射塔安装资质

求解电视台发射塔安装资质

浏览：34次 | 提问时间： 07-02 04:44

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我是超人却忘了飞 07-02 04:44

1、数据证明路由器居中信号最佳　　如果不考虑其他诸如布局、美化方面的问题，只考虑信号这个层面，那么把路由器放在房子中间能保证各个房间都有足够的信号强度。如果要考虑其他因素或者不方便把路由器放在哪个位置，那么尽量保证路由器尽量靠近经常使用无线信号的场所，同时注意躲开干扰源。　　2、干扰测试摆放环境有讲究，尽量远离干扰源，避免障碍物　　远离信号干扰源　　Wi-Fi使用2.4GHz的频段，如果旁边有设备刚好也在发射这个频率范围的电磁波那么会对信号有所影响。　　　　3、调整无线信道　　微波炉对信号的影响　　　　小贴士：“信道”相当于一条信号传输的通路，一个信道就是一个独立频率。路由器信号和干扰信号频率相隔越远，干扰也越小。　　4、尽量减少传输过程的障碍物　　路由器穿墙问题也是家用论坛网友常问到的问题之一。在家里不可能没有墙，在不同的房间使用就不可能避免“穿墙”的问题。Wi-Fi“绕过”障碍物的能力很弱，所以当碰到墙的时候只能穿过墙继续传播。墙分很多种，例如木墙、玻璃墙、砖墙、混凝土、钢筋混凝土墙等，这几种墙对信号的阻隔能力依次提升，而且墙体厚度对信号也有不同程度的干扰，所以穿墙能力不能一概而论。一般在家庭实际面积低于100平米的情况下，如果摆放得好，穿墙不超过3堵，那么信号还是可以接受的。下面我们来看看墙对无线信号的影响吧(表3)。　　由此可见，墙对Wi-Fi信号的阻隔还是比较大的；如果想信号传输等更远，那么就得避开墙。顺便说一下，路由器参数中提到的信号覆盖范围指的都是空旷地的信号覆盖范围，不表示实际范围也是这个值。　　　　穿墙能力测试　　　　注：1、墙之间还有距离；2、视环境不同数据只能用来参考。　　小结：　　远离信号干扰源、减少障碍物　　要想获得最好的信号，那么要求无线路由器或者笔记本远离微波炉之类的干扰源，要求传输过程的障碍物越少越好、穿过的墙越少越好。　　垂直摆放测试??离地面越高越好、天线竖直放置较好　　摆放高度越高越好　　为什么移动基站、电视台发射塔都建在比较高的地方？显然是获得更广阔的传输范围，这是由无线信号的传输特性决定的。无线路由器也一样，尽量摆高以便使信号范围传输得更广。当然这个高度也不是越高越好，如果摆放到角落并和屋顶相接触那也不是好的摆放方法。　。　　5、摆放高度对无线信号的影响　　　　由此可以看到，在一定高度范围内摆放位置越高，信号传输范围也就越大。　　小贴士：信号足够的情况下可以降低无线信号的功率　　如果家庭面积不大，那么为了防止别人蹭网或者窃听，那么信号还是不要传输这么远比较好。除了调整位置调整传输距离外，使用路由器的第三方固件诸如DD-WRT、番茄等都可以对无线信号进行调整，这些第三方固件好是好但是刷新的时候必须注意风险，也不是所有路由器都可以使用的，至少国内销售的行货廉价路由器几乎都没法用第三方固件。　　天线尽量竖直放置　　无线路由器使用的天线一般都是全向天线，极化方式有垂直极化和水平极化、±45°度极化等几种。一般的无线路由器都只有一根天线(也有2-3根天线的)，多采用双极化天线，但针对不同的路由器最好多试试看天线的角度如何摆放能获得最好的效果。这个角度要和路由器的摆放高度、天线的类型结合才有意义，由于情况复杂这里就不做测试了。按照习惯，把天线垂直地面摆放效果比较好(图4)。　　总结：居中、拔高是要点　　无线路由器应该尽可能地摆高以获得更广的信号传输范围，一般在居室中由于不方便固定，所以摆放在比较高的桌子上也就可以了，如果房子有地方放得更高，那么也请尽量摆高，但是不要靠近屋顶。　　无线路由器的天线则建议和地面垂直.

姑娘你睫毛又溺水了吗 07-02 04:53

一、二、三类防雷建筑接地装置≤10Ω一、二、类工业建筑防雷接地装置≤10Ω三类工业建筑防雷接地装置≤30Ω露天可燃气体储气柜防雷接地装置≤30Ω露天油罐防雷接地装置≤10Ω户外架空管道防雷接地装置≤20Ω水塔、烟囱防雷接地装置≤30Ω微波站、电视台的天线防雷接地装置≤5Ω微波站、电视台的机房防雷接地装置≤1Ω卫星地面站防雷接地装置≤1Ω广播发射台天线塔的防雷接地装置≤0.5Ω广播发射台发射机房的防雷接地装置≤10Ω雷达实验调试场防雷接地≤1Ω雷达天线于主机工作接地共用接地体≤1Ω

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